Home Organizations Wyoming Every cause Civil rights and advocacy 36 Environment and climate 168 Labor unions and worker centers 100 Housing and homelessness 80 Immigrant services and rights 3 Food banks and hunger 46 Legal aid 7 Voting and civic participation 11 Community health and reproductive care 15 LGBTQ+ services and rights 6 Criminal justice reform and reentry 5 Civil rights and advocacy (36) Organization City Type Revenue Fosters Outriders FoundationEIN 86-2364547 · filings Jackson Charity, 501(c)(3) $2.3 million Matthew Shepard FoundationEIN 31-1640047 · filings Casper Charity, 501(c)(3) $1.2 million Chelseas FundEIN 83-0322262 · filings Lander Charity, 501(c)(3) $578,858 Wyoming Civic Engagement NetworkEIN 93-3777806 · filings Cheyenne Charity, 501(c)(3) $507,735 Visitation And Advocacy Center For The 6th Judicial DistrictEIN 83-0322769 · filings Gillette Charity, 501(c)(3) $318,585 Casper PrideEIN 82-4629841 · filings Casper Charity, 501(c)(3) $245,424 Wyoming Untrapped IncEIN 46-3676928 · filings Jackson Charity, 501(c)(3) $185,372 Immigrant HopeEIN 47-4700677 · filings Jackson Charity, 501(c)(3) $123,042 Better Wyoming Action & Research IncEIN 99-0790892 · filings Laramie Advocacy, 501(c)(4) $107,373 Wyoming Gun Owners IncEIN 81-4691774 · filings Cheyenne Advocacy, 501(c)(4) $75,365 Spirit Of Freedom InstituteEIN 27-3731345 · filings Cheyenne Charity, 501(c)(3) — Pdef IncEIN 33-2329934 · filings Sheridan Charity, 501(c)(3) —
The 36 largest →
Environment and climate (168) Organization City Type Revenue National Outdoor Leadership SchoolEIN 83-0204184 · filings Lander Charity, 501(c)(3) $43.0 million Holdfast TrEIN 88-6574046 · filings Jackson Advocacy, 501(c)(4) $25.9 million Teton Science SchoolsEIN 83-0219163 · filings Jackson Charity, 501(c)(3) $19.6 million Jackson Hole Land TrustEIN 74-2138785 · filings Jackson Charity, 501(c)(3) $9.8 million Wind River Tribal Buffalo InitiativeEIN 88-1968510 · filings Kinnear Charity, 501(c)(3) $6.9 million National Park Friends AllianceEIN 93-1729933 · filings Jackson Charity, 501(c)(3) $3.1 million Astoria Park ConservancyEIN 82-5250433 · filings Jackson Charity, 501(c)(3) $2.8 million Wyoming Outdoor CouncilEIN 83-0259411 · filings Lander Charity, 501(c)(3) $2.7 million Chalten TrEIN 88-6576331 · filings Jackson Advocacy, 501(c)(4) $2.0 million Friends Of The Bridger-tetonEIN 83-3146987 · filings Jackson Charity, 501(c)(3) $1.6 million Protect Our Water Jackson Hole IncEIN 46-5538680 · filings Wilson Charity, 501(c)(3) $1.5 million Wilder TrEIN 88-6588261 · filings Jackson Advocacy, 501(c)(4) $1.3 million
The 168 largest →
Labor unions and worker centers (100) Organization City Type Revenue International Brotherhood Of Electrical WorkersEIN 83-0161985 · filings Casper Labor organization, 501(c)(5) $2.2 million Wyoming Farm Bureau FederationEIN 83-0175474 · filings Laramie Labor organization, 501(c)(5) $2.1 million International Brotherhood Of Electrical WorkersEIN 83-0124875 · filings Cheyenne Labor organization, 501(c)(5) $1.6 million Plumbers & Pipe Fitters Local Union 192EIN 83-0136889 · filings Cheyenne Labor organization, 501(c)(5) $1.5 million Mountain Plains Agricultural ServiceEIN 83-0285567 · filings Casper Labor organization, 501(c)(5) $1.0 million Utility Workers Union Of America Afl-cioEIN 83-6003631 · filings Casper Labor organization, 501(c)(5) $584,207 Laborers International Union Of North AmericaEIN 83-0209994 · filings Cheyenne Labor organization, 501(c)(5) $374,565 United SteelworkersEIN 83-0181990 · filings Rock Springs Labor organization, 501(c)(5) $361,194 United SteelworkersEIN 83-6009153 · filings Green River Labor organization, 501(c)(5) $288,501 International Brotherhood Of Boiler Makers Iron Ship Builders BlacksmiEIN 74-2525929 · filings Rock Springs Labor organization, 501(c)(5) $249,086 International Brotherhood Of Electrical WorkersEIN 83-0244678 · filings Wheatland Labor organization, 501(c)(5) $207,682 American Federation Of Labor & Congress Of Industrial OrgsEIN 83-0157300 · filings Cheyenne Labor organization, 501(c)(5) $195,262
The 100 largest →
Housing and homelessness (80) Organization City Type Revenue Ark Regional Services IncEIN 83-0208994 · filings Laramie Charity, 501(c)(3) $14.4 million Wyoming Rescue MissionEIN 74-2347412 · filings Casper Charity, 501(c)(3) $5.5 million Wyoming Weatherization ServicesEIN 26-2441709 · filings Worland Charity, 501(c)(3) $5.2 million Wyoming Housing Network IncEIN 75-3155083 · filings Casper Charity, 501(c)(3) $2.8 million Comea IncEIN 74-2269474 · filings Cheyenne Charity, 501(c)(3) $2.6 million Reach FoundationEIN 83-0249121 · filings Riverton Charity, 501(c)(3) $2.4 million Youth Crisis Center IncEIN 83-0270428 · filings Casper Charity, 501(c)(3) $2.0 million I-reach 2EIN 72-1525048 · filings Evansville Charity, 501(c)(3) $1.8 million Friends Of Pioneer HomesteadEIN 20-0122268 · filings Jackson Charity, 501(c)(3) $1.7 million Unaccompanied Students InitiativeEIN 83-2885380 · filings Cheyenne Charity, 501(c)(3) $1.3 million Habitat For Humanity International IncEIN 83-0309016 · filings Casper Charity, 501(c)(3) $1.1 million St Anthony Housing IncEIN 83-0248425 · filings Casper Charity, 501(c)(3) $894,762
The 80 largest →
Immigrant services and rights (3) Organization City Type Revenue Wyoming Immigrant Advocacy ProjectEIN 92-3894513 · filings Jackson Charity, 501(c)(3) $650,933 Grace FoundationEIN 84-1952931 · filings Cheyenne Charity, 501(c)(3) $88,051 Warrior Sol FoundationEIN 39-2679320 · filings Cheyenne Charity, 501(c)(3) —
Food banks and hunger (46) Organization City Type Revenue Meals On Wheels Of Cheyenne IncEIN 83-0211345 · filings Cheyenne Charity, 501(c)(3) $2.1 million Food GroupEIN 61-1762787 · filings Sheridan Charity, 501(c)(3) $1.1 million Hole Food Rescue CorpEIN 46-5258661 · filings Jackson Charity, 501(c)(3) $1.0 million Holy Cross Center IncEIN 83-0283605 · filings Casper Charity, 501(c)(3) $655,122 Lander Care And Share Food BankEIN 26-0215236 · filings Lander Charity, 501(c)(3) $514,099 Pinedale Community Food Basket IncEIN 84-1425425 · filings Pinedale Charity, 501(c)(3) $500,006 Meals On Wheels FoundationEIN 83-0278940 · filings Casper Charity, 501(c)(3) $332,579 Food Bank Of Sweetwater CountyEIN 83-0320236 · filings Rock Springs Charity, 501(c)(3) $294,463 Wyoming Food For Thought ProjectEIN 46-1291957 · filings Casper Charity, 501(c)(3) $272,811 Friday Food Bag FoundationEIN 27-1587170 · filings Cheyenne Charity, 501(c)(3) $239,022 Johnson County Friends Feeding FriendsEIN 83-0820183 · filings Buffalo Charity, 501(c)(3) $144,642 Thayne Community Food BankEIN 45-3714232 · filings Thayne Charity, 501(c)(3) $103,532
The 46 largest →
Legal aid (7) Organization City Type Revenue Legal Aid Of Wyoming IncEIN 20-5552001 · filings Cheyenne Charity, 501(c)(3) $1.7 million Wyoming Guardianship CorporationEIN 83-0317016 · filings Cheyenne Charity, 501(c)(3) $1.4 million Equal Justice Wyoming FoundationEIN 27-3029906 · filings Cheyenne Charity, 501(c)(3) $574,042 Wyoming Childrens Law CenterEIN 27-0317225 · filings Laramie Charity, 501(c)(3) $429,720 Teton County Access To Justice CenterEIN 45-3798116 · filings Jackson Charity, 501(c)(3) $147,990 Wyoming Health Through Justice FoundationEIN 41-3162526 · filings Cheyenne Charity, 501(c)(3) — Caseaid FoundationEIN 84-2321893 · filings Cheyenne Charity, 501(c)(3) —
Voting and civic participation (11) Organization City Type Revenue Better WyomingEIN 47-3490919 · filings Laramie Charity, 501(c)(3) $414,971 Wyoming Investor NetworkEIN 88-2031141 · filings Cody Advocacy, 501(c)(4) $335,556 Equality State Policy CenterEIN 83-0305144 · filings Laramie Charity, 501(c)(3) $274,868 Better Wyoming Action & Research IncEIN 99-0790892 · filings Laramie Advocacy, 501(c)(4) $107,373 Civics307EIN 39-4356859 · filings Sheridan Charity, 501(c)(3) — Engage CouncilEIN 41-2758358 · filings Laramie Charity, 501(c)(3) — Civic Duty FoundationEIN 41-2953964 · filings Casper Charity, 501(c)(3) — We See You Media GroupEIN 92-0741381 · filings Sheridan Charity, 501(c)(3) — Wyoming FreeEIN 92-2229947 · filings Buffalo Advocacy, 501(c)(4) — Mobilizing Civic Engagement IncEIN 93-2138540 · filings Casper Charity, 501(c)(3) — League Of Women Voters Of Wyoming Impact FundEIN 99-0979687 · filings Laramie Charity, 501(c)(3) —
Community health and reproductive care (15) Organization City Type Revenue Community Health Center Of Central Wyoming IncEIN 83-0326307 · filings Casper Charity, 501(c)(3) $20.9 million Cheyenne Health & Wellness CenterEIN 87-0718984 · filings Cheyenne Charity, 501(c)(3) $7.6 million Riverpeak HealthEIN 83-2105065 · filings Riverton Charity, 501(c)(3) $7.6 million Wyoming Health CouncilEIN 83-0292017 · filings Casper Charity, 501(c)(3) $1.0 million Downtown ClinicEIN 83-0326354 · filings Laramie Charity, 501(c)(3) $659,625 Childrens Advocacy Project IncEIN 20-5891831 · filings Casper Charity, 501(c)(3) $567,345 Laramie Reproductive HealthEIN 83-0212347 · filings Laramie Charity, 501(c)(3) $483,782 Womens Resource CenterEIN 56-2321631 · filings Gillette Charity, 501(c)(3) $387,924 Gillette Reproductive HealthEIN 83-0319938 · filings Gillette Charity, 501(c)(3) $344,300 Reproductive Healthcare Of The Big Horns IncEIN 83-0319930 · filings Sheridan Charity, 501(c)(3) $266,365 The Foundation For Heart Mountain Free ClinicEIN 65-1310668 · filings Cody Charity, 501(c)(3) $181,620 Western Wyoming Family PlanningEIN 83-0237580 · filings Rock Springs Charity, 501(c)(3) $171,281
The 15 largest →
LGBTQ+ services and rights (6) Organization City Type Revenue Casper PrideEIN 82-4629841 · filings Casper Charity, 501(c)(3) $245,424 Pflag LanderEIN 93-1718239 · filings Lander Charity, 501(c)(3) — Rock Springs PrideEIN 93-2136361 · filings Rock Springs Charity, 501(c)(3) — Pride CheyenneEIN 93-3842305 · filings Cheyenne Charity, 501(c)(3) — Jackson Hole PrideEIN 99-2544674 · filings Jackson Charity, 501(c)(3) — Follow The Unicorn ProductionsEIN 99-3779763 · filings Sheridan Charity, 501(c)(3) —
Criminal justice reform and reentry (5) Organization City Type Revenue Treatment Court Foundation Of Sweetwater CountyEIN 20-4957304 · filings Rock Springs Charity, 501(c)(3) $255,016 Second Chance MinistriesEIN 80-0590825 · filings Gillette Charity, 501(c)(3) $186,518 Immigrant HopeEIN 47-4700677 · filings Jackson Charity, 501(c)(3) $123,042 Bethel Outreach MinistriesEIN 84-1413309 · filings Cheyenne Charity, 501(c)(3) $68,575 Another Chance MinistriesEIN 83-1865926 · filings Casper Charity, 501(c)(3) —
Matched by IRS activity code and listed by the revenue on the organization's latest return. Inclusion is not an endorsement; check an organization's own site and filings before you give. Gifts to 501(c)(4) and 501(c)(5) organizations are not tax-deductible.
Source: IRS Exempt Organizations Business Master File . Updated Nov 9, 2026.